learn

learn is a skill for Claude Code, Codex from d-o-hub/github-template-ai-agents. It costs 100 tokens per session (828 once invoked), scanned A, original, MIT.

A tool for recording useful, non-obvious lessons from a coding session in the most relevant AGENTS.md file. These files give future coding agents project-specific instructions and knowledge.

In plain words
What is it for?
It helps document debugging breakthroughs, project-wide patterns, environment settings and rules specific to scripts or skills.
Why use it?
It preserves discoveries that would otherwise be lost, such as hidden file relationships, unusual commands or important configuration details.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/d-o-hub/github-template-ai-agents/learn
Any agent
npx skills add d-o-hub/github-template-ai-agents --skill learn
Clone the repo
git clone --depth 1 https://github.com/d-o-hub/github-template-ai-agents

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for learn

README.md
[![agentmods](https://agentmods.dev/badge/skills/d-o-hub/github-template-ai-agents/learn.svg)](https://agentmods.dev/skills/d-o-hub/github-template-ai-agents/learn)
Your own site
<a href="https://agentmods.dev/skills/d-o-hub/github-template-ai-agents/learn"><img src="https://agentmods.dev/badge/skills/d-o-hub/github-template-ai-agents/learn.svg" alt="Measured on agentmods" height="20"></a>
Per session 100 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 828 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00100 $0.00828
Opus 5 $0.00050 $0.00414
Sonnet 5 $0.00020 $0.00166
Haiku 4.5 $0.00010 $0.00083

Measured 3d ago against content hash fde8d015c970, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

learn scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.agents/skills/learn/SKILL.md · 85 lines

How it starts

The opening of the file, as written. The whole thing — 85 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Learn

Extract non-obvious session learnings into scoped AGENTS.md files to preserve knowledge across sessions.

When to Use

Activate after completing a non-trivial task to capture insights that would otherwise be lost.

Instructions

What to Capture (Non-Obvious Only)

  • Hidden relationships between files or scripts not obvious from code.
  • Execution paths that differ from what the code appears to do.
  • Non-obvious config, env vars, or flags (see agents-docs/ENVIRONMENT_VARIABLES.md).
  • Debugging breakthroughs where error messages were misleading.
  • Files that must change together (e.g., AGENTS.md + agents-docs/AVAILABLE_SKILLS.md when adding skills).
  • Build/test commands not documented in README.
  • Architectural constraints discovered at runtime.

What NOT to Capture

  • Obvious documentation or standard behavior.
  • Duplicates of existing entries.
  • Verbose explanations or session-specific notes.

Scoping Rules

Place learnings in the most specific file:

  • Project-wide: agents-docs/self-learning-rules.md (under ## Recent Project-Wide Learnings).
  • Script-specific: scripts/AGENTS.md.
  • Skill-specific: .agents/skills/<name>/AGENTS.md.

Also write a fuller LESSON-NNN entry to agents-docs/LESSONS.md for archival.

Triple-Write Requirement

Every new non-obvious insight must be recorded in three places:

  1. Verbose Log: Add a full LESSON-NNN entry to agents-docs/LESSONS.md with Issue/Root Cause/Solution.
  2. Distilled Note (scoped): Add a 1–3 line note to the nearest AGENTS.md (this is what learn automates).
  3. Distilled Note (project-wide): Add a 1–3 line note to agents-docs/self-learning-rules.md under ## Recent Project-Wide Learnings.

Format

  • 1–3 lines per insight in AGENTS.md.
  • Fits within MAX_LINES_AGENTS_MD=200 constraint.
  • Bulleted list under a "Learnings" or "Context" section.

See Also

  • agents-md — AGENTS.md best practices
  • skill-creator — Create and improve skills

Read the full file on GitHub · 85 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 85 lines · 100 tokens per session scan A fde8d015c970

Subscribe to this mod's changes

learn is a skill published in the GitHub repository d-o-hub/github-template-ai-agents (2 stars, last pushed 3d ago), licensed MIT. It adds 100 tokens to every session and 828 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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